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The use of randomized controlled trials are useful for comparing a simple intervention such as a new drug or procedure. However, complex interventions such as a new system to evaluate early intervention in serious illness usually require complex research methodologies. An intensive care unit is a complex organization and patient care can be influenced by(More)
There is compelling evidence that more diverse ecosystems deliver greater benefits to people, and these ecosystem services have become a key argument for biodiversity conservation. However, it is unclear how much biodiversity is needed to deliver ecosystem services in a cost-effective way. Here we show that, while the contribution of wild bees to crop(More)
Global trends in pollinator-dependent crops have raised awareness of the need to support managed and wild bee populations to ensure sustainable crop production. Provision of sufficient forage resources is a key element for promoting bee populations within human impacted landscapes, particularly those in agricultural lands where demand for pollination(More)
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